# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
""" 画图，学用rectangle画方形 """

if __name__ == '__main__':
    from Tkinter import *
    root = Tk()
    root.title('Hello Canvas')
    canvas = Canvas(root,width = 400,height = 400,bg = '#cccccc')
    x0 = 263
    y0 = 263
    y1 = 275
    x1 = 275
    for i in range(19):
        canvas.create_rectangle(x0,y0,x1,y1)
        x0 -= 5
        y0 -= 5
        x1 += 5
        y1 += 5
        
    canvas.pack()
    root.mainloop()